/Engine/Source/Editor/SkeletonEditor/Public/IEditableSkeleton.h
Set the blend profile scale for the specified bone
void SetBlendProfileScale ( const [FName](API\Runtime\Core\UObject\FName) & InBlendProfileName, const [FName](API\Runtime\Core\UObject\FName) & InBoneName, float InNewScale, bool bInRecurse )